And john fawcett



(-No Model.)

T. UTLE'Y 82; J. PAWGETT.

' VENTILATOR FOR SHIPS.

No. 301,538. Patented July 8, 1884.

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UNITED STATES Fries.

PATENT BROOKLYN,

NEXV YORK.

VENTILATOR Foe SHIPS.

SPECIFICATION forming part of Letters Patent No. 301,538, dated July 8, 1884.

Application filed December 23, 1881. 7 (No model.) Patented in England April 18, 1881, No. 1,687.

To all whom it may concern.-

Be it known that we. Tuorms UTLEY, a subject'of the Queen of Great Britain, residing at Boston, in the county of Suffolkand State of Massachusetts, and JOHN FAwoETr, a subject of the Queen of Great Britain, and now residing at Brooklyn, in the county of Kings and State of New York, have jointly invented a new and useful Improvement in Ventilators for Ships, (for which we have obtained English Letters Patent No. 1,687,d ated April 18, 1881,) of which the following is a full, clear, and concise description, reference being had to the accompanying drawings, in whieh- Figure 1 is an inboard elevation, partly in section; and Fig. 2,.avertical section showing the ventilator embodying our invention.

In the drawings, B and represent'two chambers in casing A.

D and E represent valves, made, preferably, of cork, and mounted, as shown, upon guiderod f. The casing Ais securely attached to an air-port of the vessel, or to any other air-passage, one convenient means being the strong perforated plate a on the outside of the air-port, and a screw-bolt, a, and nut a as shownin Fig. 2. The plate a and perforated cover a serve as breakwaters, and also as strainers. Disks (Z, of vulcanized rubber, serve to make the valves D E fit their seats better. The chamber B has a plate of glass, Z), in it, in order that light may enter through it. The cover I) can be securely fastened over the glass 6 by means of the screws 2) and thumb-nuts If, should occasion require. The cover Q can be used to cover the mouth 04 of casingA by meansof screws 0 and nuts 0". When the valves D E are as shown in the drawings, air 0 has free passage through the air-port valveopenings dv e and mouth 0; but when the airport is submerged the inflow of water will lift valve D,and any water that escapes past valve D into chamber 0 will close valve E. When the water escapes from chambers B and O, the air will again have free passage through the ventilator. The rod f passesthrough valveD, and is firmly held both above and below that valve, so that the rush of the water into chamber B shall not bend rod f, as would be likely to happen were rod f not firmly held below as well as above the valve.

The apparatus above described is strong and simple, allows the passage of both light and air, and can be closed water-tight by means of the covers a and I) should the valves become deranged.

What is claimed as our invention is 1. Theimproved ships ventilator herein described, consisting of a casing, A, with its outward opening attached to an air-port, and its inward opening provided with a cover, 0, and divided by partitions into the chambers 13 O O, the partitions having openings d 6', controlled by the fioat-valves D E, acting independently of each other, to close these openings when water enters thecasing, substantially as and for the purposes set forth.

2. In a ships ventilator, a casing provided with partitions having openings d e, in combination with the independent float-valves D E, the lower valve, I), sliding on arod, f, passing through it and attached to the casing both above and below it, as set forth.

THOMAS UTLEY. V JOHN FAW CETT. 

